Clean up and fix FTBFS (#914250)
    
    - Add patch to fix broken POD in README, causing FTBFS (#914250)
    - BR:/R: perl(Carp)
    - BR: /usr/bin/pod2text, perl(base), perl(Class::Accessor::Fast) and
      perl(ExtUtils::MakeMaker)
    - Upstream doesn't ship license files so neither should we
    - Enhance %description
    - Don't use macros for commands
    - Don't need to remove empty directories from the buildroot
    - Use %{_fixperms} macro rather than our own chmod incantation
    - Use DESTDIR rather than PERL_INSTALL_ROOT
    - Make %files list more explicit